New changelog entries:
* Add Conflicts to network-manager-dev against deprecated libraries.
The deprecated libnm-glib-dev, libnm-glib-vpn-dev and libnm-util-dev
require header files from network-manager-dev which are no longer
provided in newer versions. Add Conflicts to network-manager-dev to
ensure that we don't get a broken combination of installed packages.
(Closes: #903029)
* Update description of network-manager-dev